Why Liveupdate requires reboot every 24 hours?

After I installed this product, it asked to reboot EVERY 24 hours. If I accidently confirmed it, i will lost my documents and my work. 

 

I have not seen a product like this. I have to permanently disable this **bleep**.

 

I do not know whether the Symantec Employees are using this product.

 

I am definitely going to switch to another vendor.  I wish I can get my money back.